It seems like what you really want is for others to treat your emergencies as theirs. They're not, they're yours. If you can't wait 15 minutes for a ping back without being completely stuck, you aren't planning your work correctly. That's nobody else's fault.

A good analogue is the culture of "the smoke break"(see the Friend's episode The One Where Rachel Smokes for a funny example). It's easy to say "the best decisions are made during smoke breaks therefore smoking is necessary for efficient businesses." Clearly that's absurd. It's not the smoking that makes good decisions, nor does the ability to tap people on the shoulder make for good documentation. Depending upon an accidental formation of office culture is never going to go well in the long run.

Viewed a different way, it allows a team to spend less time documenting and more time on other things. Increased documentation could be seen as one of the costs of working remotely.

All this to say, the trade-off you're proposing doesn't exist. You're arguing for paying twice instead of paying once - twice in the sense that you lose productivity now via random interrupts, and in the future when your siloed knowledge leaves you high and dry. Hope the "other things" you got done instead of documenting were worth it in that scenario.